In the i-ChiLL Black Series system, the water block first takes up the heat and passes it to the water flowing into it. Through the hose system, the water carries the heat to the radiator. Once it arrives in the radiator, the water passes the heat to the air via the ribs. The thinner the ribs and the larger the radiator's surface is as a result, the more powerful the cooling system. The "cooled" water flows from the outlet side of the radiator back into the CPU water block. The air flow within the water block is also important in ensuring adequate cooling. That is because the more thermal discharge the water can absorb from the surrounding material in the block, the better the cooling performance.

The Black Series water-block offers superior thermal performance at the GPU level thanks to the Direct-Flow design on Inlet/Outlet.

High thermal conductivity grease pads are pre-applied in the memory and MOSFET areas for user convenience. Short barb fittings are included for 1/4" tubing and are compatible with quad SLI setups.

Compared to a reference GTX 470 card, the i-ChiLL GeForce GTX 470 Black Series operates at just 52 degrees C at full speed, which is 40 degress C less than the temperature of the reference GTX 470.